CVE-2026-61845

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    CVE-2026-61845

    Published: 30 Oct 2026Last Modified: 1 Nov 2026

    Summary: Crass: Large numeric exponents cause CPU and memory denial of service

    Details: Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3 specification. Prior to 1.0.7, Crass converts `CSS scientific notation` number values with unbounded exponentiation before clamping the result to `Float::MAX`. Applications that use Crass to parse attacker-controlled CSS strings can be forced to spend disproportionate CPU and memory parsing a tiny input, potentially resulting in a crash. This issue is fixed in version 1.0.7.

    References: https://github.com/rgrove/crass/releases/tag/v1.0.7, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61845.json, https://github.com/rgrove/crass/security/advisories/GHSA-6wmf-3r64-vcwv, https://nvd.nist.gov/vuln/detail/CVE-2026-61845, https://github.com/rgrove/crass/commit/ea6726b7f7cf7e85b23aa2240b8512b4f8d11ad9

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -cfd5daa3ce23cd7b2356acf90ecb7a02defe002c

    Affected versions

    v1.0.6
    v1.0.5
    v1.0.4
    v1.0.3
    v1.0.2
    v1.0.1
    v1.0.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-61845 | CVE-DB